CVE-2026-123802: supertokens-core · Improper Authentication
Affects supertokens-coreSource CVE Database V5
Not known to be exploited · CVSS 8.1 High · fixed in 12.3.1 : patch supertokens-core soon.
Data as of 9 Nov 2026, 18:34 UTC
Thin evidence
One scorer or none| CNA (GitHub_M) | CVSS 3.1 | 8.1 |
|---|
- Patch
- Available – fixed in 12.3.1, 12.2.1, 12.1.2 +3
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:NExploitation evidence
Disclosed: evidence found.
CVE published 9 Nov 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 9 Nov 2026.
What to do
Upgrade to a fixed release listed under Affected software.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| supertokenssupertokens-core | Affected
| Fixed in
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| supertokenssupertokens-core | Affected
| Fixed in
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| supertokenssupertokens-core | Affected
| Fixed in
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| supertokenssupertokens-core | Affected
| Fixed in
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| supertokenssupertokens-core | Affected
| Fixed in
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| supertokenssupertokens-core | Affected
| Fixed in
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AI-suggested
Upgrade SuperTokens Core to one of the fixed versions: 11.3.8, 11.4.8, 12.0.11, 12.1.2, 12.2.1, or 12.3.1. These versions contain the official fix for the improper authentication vulnerability. No other mitigation is indicated by the vendor advisory.
Description
CVE-2026-123802 is an improper authentication vulnerability in SuperTokens Core affecting versions from 11.3.0 up to but not including 11.3.8, 11.4.0 up to 11.4.8, 12.0.0 up to 12.0.11, 12.1.0 up to 12.1.2, 12.2.0 up to 12.2.1, and 12.3.0 up to 12.3.1. The flaw allows a licensed deployment with a configured SAML client to authenticate an identity from an assertion that does not satisfy the audience check properly, enabling an attacker to impersonate a victim IdP user. This issue is fixed in versions 11.3.8, 11.4.8, 12.0.11, 12.1.2, 12.2.1, and 12.3.1.
References
- github.com/supertokens/supertokens-core/security/advisories/GHSA-wfg2-vqfg-rqh6 (opens in a new tab)
- github.com/supertokens/supertokens-core/commit/00a15e045323ba8a566ca6f59b70125b4030ab6c (opens in a new tab)
- github.com/supertokens/supertokens-core/commit/1645915320c5dfc22bce9029eb7d8364f8df402f (opens in a new tab)
- github.com/supertokens/supertokens-core/commit/1d0fd5b40848629295cf86d47be185f92f31e445 (opens in a new tab)
- github.com/supertokens/supertokens-core/commit/324686349b21ab46fe465ca5f74294d6c68d3859 (opens in a new tab)
- github.com/supertokens/supertokens-core/commit/53f42f496477e7cc3ccd48fe57851fa08d06a248 (opens in a new tab)
- github.com/supertokens/supertokens-core/commit/5ffdd887b470035f409d61f85f2186381ad9cdd6 (opens in a new tab)
- github.com/supertokens/supertokens-core/commit/8e69a85e38709b832869c3bfc83df9a150d6f3cf (opens in a new tab)
- github.com/supertokens/supertokens-core/commit/a2483b692d43294fdb9ad2f8f6f831cca8300081 (opens in a new tab)
- github.com/supertokens/supertokens-core/commit/b21760ceb5089b0fa30c8fd46f7bbfc680de56dd (opens in a new tab)
- github.com/supertokens/supertokens-core/commit/c77b13061176d9bd50ed24a9cf50ffbcdf332ee5 (opens in a new tab)
- github.com/supertokens/supertokens-core/commit/f4ddc022ef1ee17933efb710c21a960cb4ada083 (opens in a new tab)
- github.com/supertokens/supertokens-core/releases/tag/v11.3.8 (opens in a new tab)
- github.com/supertokens/supertokens-core/releases/tag/v11.4.8 (opens in a new tab)
- github.com/supertokens/supertokens-core/releases/tag/v12.0.11 (opens in a new tab)
- github.com/supertokens/supertokens-core/releases/tag/v12.1.2 (opens in a new tab)
- github.com/supertokens/supertokens-core/releases/tag/v12.2.1 (opens in a new tab)
- github.com/supertokens/supertokens-core/releases/tag/v12.3.1 (opens in a new tab)